Science Fair Marking Term 2 2011
☒ Not achieved ☑Achieved☑☑Advanced
Scientific Process and Background:
☑Clear aim/hypothesis carried through
☑Method, accurate experimentation
☑Accurate experimentation, controls, variables, repetitions
☑Results clear, accurate, include appropriate data
☑Conclusions are in line with aim/hypothesis
☑Results are interpreted and discussed (conclusion)
Technical Skill:
☑Design of the experiment
☑Use of apparatus and materials
Originality:
☑Imaginative/creative ideas
☑New/Unusual application in science
Presentation of Display:
☑Colour/form/clarity/graphics
☑Innovative appeal
Log Book:
☒ Authentic ongoing record with raw data included
☒ Has supporting documentation, bibliography, acknowledgements
Teacher Comment:
Rose this is a very interesting Science Fair, I had a similar hypothesis to you. I was very surprised that the carrot had the 2nd highest amount of water as it seems like such a solid vege. Rose it is always good to include a reason based on research. You commented that potato had fibre and starch and wondered weather this made a difference to water content, you could have found some information on this if you had done some further research (backed up your findings).
Student Comment:
I think that I could have done my science fair better by drying out the food more to make the results more actuate. I also think that I could have done more tests so that the results were more accurate.
Good start Rose. Your introduction refers to fruit however your Aim & Method include vege's ?? you might need some editing here. Please start your experiment as soon as possible as this will take time for the fruit to dry out. The food tec department have some food dehydrators if this will help, just ask & I'll get one. Don't forget to take lots of photos.
Introduction
Human bodies contain around 55%-60% of water in adults. We all need to drink about 8 glasses of water a day. One way to get this is drinking straight water out of a glass, and another way is to eat plenty of juicy fruit and vegetables.
Fruit and vegetables are an essential part of an every day diet because of all the vitamins and nutrients that they have. They are commonly used for juicing and are also a great source of water. I thought that it would be interesting to find out how much water that they had and which one would contain the most water.
Aim
Will an apple, banana, carrot, onion, pear, kiwi fruit or potato contain more water and what percentage of water will there be?
Hypothesis:
I think that kiwi fruit will contain the most water because they are very juicy when you eat them
I think that bananas will have the least amount of water in them because they aren’t very juicy when you bite into them.
Weigh all of the fruit and record the weight.
Slice the fruit around 5mm- 1cm.
Weigh the fruit again and record the weight.
Turn the oven onto a low heat setting.
Lay the fruit on the trays and put in the oven and wait till it is completely dried out.
After it has dried weigh the fruit again and calculate the percentage of weight that the fruit has lost and you will have your answer of how much water the fruit contains.
Results:
Banana
Onion
Carrot
Apple
Kiwi fruit
Pear
Potato
Original weight
110g
100g
137g
184g
111g
139g
129g
Sliced weight
109g
99g
137g
181g
109g
133g
128g
Dried weight
38g
15g
25g
54g
22g
31g
33g
Percent of water contained
65.5%
85%
81.8%
70.7%
80.2%
77.7%
74.5%
Conclusion
In my test I found out that my hypothesis was partly wrong and part correct. I thought that A Kiwi fruit would contain the most water but it turned out that an onion did. The part of my hypothesis that was right was that I thought a banana would contain the least amount of water.
I think that part of the reason that a banana has a smaller amount of water than the other fruit and vegetables is because a lot of it is made up of carbohydrates and fiber. What this doesn't explain is why a potato had a high amount of water when it is also a high energy food.
I found it surprising that an apple had the 2nd lowest amount of water in it because biting into them they seem really juicy. If I was to do this experiment again I would try using food dehydrators and see if there would be a difference in my results.
Rose I can not proof read & edit work that is not here! 10.05.2011
Science Fair Marking Term 2 2011
☒ Not achieved ☑Achieved☑☑Advanced
Scientific Process and Background:
☑Clear aim/hypothesis carried through
☑Method, accurate experimentation
☑Accurate experimentation, controls, variables, repetitions
☑Results clear, accurate, include appropriate data
☑Conclusions are in line with aim/hypothesis
☑Results are interpreted and discussed (conclusion)
Technical Skill:
☑Design of the experiment
☑Use of apparatus and materials
Originality:
☑Imaginative/creative ideas
☑New/Unusual application in science
Presentation of Display:
☑Colour/form/clarity/graphics
☑Innovative appeal
Log Book:
☒ Authentic ongoing record with raw data included
☒ Has supporting documentation, bibliography, acknowledgements
Teacher Comment:
Rose this is a very interesting Science Fair, I had a similar hypothesis to you. I was very surprised that the carrot had the 2nd highest amount of water as it seems like such a solid vege. Rose it is always good to include a reason based on research. You commented that potato had fibre and starch and wondered weather this made a difference to water content, you could have found some information on this if you had done some further research (backed up your findings).
Student Comment:
I think that I could have done my science fair better by drying out the food more to make the results more actuate. I also think that I could have done more tests so that the results were more accurate.
Good start Rose. Your introduction refers to fruit however your Aim & Method include vege's ?? you might need some editing here. Please start your experiment as soon as possible as this will take time for the fruit to dry out. The food tec department have some food dehydrators if this will help, just ask & I'll get one. Don't forget to take lots of photos.
Introduction
Human bodies contain around 55%-60% of water in adults. We all need to drink about 8 glasses of water a day. One way to get this is drinking straight water out of a glass, and another way is to eat plenty of juicy fruit and vegetables.
Fruit and vegetables are an essential part of an every day diet because of all the vitamins and nutrients that they have. They are commonly used for juicing and are also a great source of water. I thought that it would be interesting to find out how much water that they had and which one would contain the most water.
Aim
Will an apple, banana, carrot, onion, pear, kiwi fruit or potato contain more water and what percentage of water will there be?
Hypothesis:
I think that kiwi fruit will contain the most water because they are very juicy when you eat them
I think that bananas will have the least amount of water in them because they aren’t very juicy when you bite into them.
Materials:
1x Apple
1x Banana
1x Onion
1x Carrot
1x Potato
1x Kiwi Fruit
1x Pear
1-3x trays
1x scales
1x knife
1x oven
Method:
Weigh all of the fruit and record the weight.
Slice the fruit around 5mm- 1cm.
Weigh the fruit again and record the weight.
Turn the oven onto a low heat setting.
Lay the fruit on the trays and put in the oven and wait till it is completely dried out.
After it has dried weigh the fruit again and calculate the percentage of weight that the fruit has lost and you will have your answer of how much water the fruit contains.
Results:
Conclusion
In my test I found out that my hypothesis was partly wrong and part correct. I thought that A Kiwi fruit would contain the most water but it turned out that an onion did. The part of my hypothesis that was right was that I thought a banana would contain the least amount of water.
I think that part of the reason that a banana has a smaller amount of water than the other fruit and vegetables is because a lot of it is made up of carbohydrates and fiber. What this doesn't explain is why a potato had a high amount of water when it is also a high energy food.
I found it surprising that an apple had the 2nd lowest amount of water in it because biting into them they seem really juicy. If I was to do this experiment again I would try using food dehydrators and see if there would be a difference in my results.
Rose I can not proof read & edit work that is not here! 10.05.2011